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STOCK-BASED COMPENSATION - Plans (Details) $ in Millions |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jun. 03, 2020 shares | Sep. 30, 2020 USD ($) shares | Sep. 30, 2019 USD ($) | Sep. 30, 2020 USD ($) plan shares | Sep. 30, 2019 USD ($) | Dec. 31, 2019 shares
STOCK-BASED COMPENSATION |  |  |  |  |  |
Stock-based compensation plans | plan |  |  |  | 2 |  |
Aggregate amount of common stock authorized (in shares) | 46,169,367 |  |  |  |  |
Reduction in number of shares for each share granted | 2.6 |  |  |  |  |
Shares granted |  |  |  | 1,401,750 |  |
Shares available for grant |  | 44,181,623 |  | 44,181,623 |  |
Compensation expense on share-based plans | $ |  | $ 19.5 | $ 16.0 | $ 53.0 | $ 46.9 |
Excess tax benefit realized for tax deductions from non-qualified stock option exercises and disqualifying dispositions of incentive stock options | $ |  | $ 3.5 | $ 0.5 | $ 9.2 | $ 26.7 |
2020 Omnibus Incentive Plan |  |  |  |  |  |
STOCK-BASED COMPENSATION |  |  |  |  |  |
Aggregate amount of common stock authorized (in shares) | 32,000,000 |  |  |  |  |
2020 Omnibus Incentive Plan | Stock Options |  |  |  |  |  |
STOCK-BASED COMPENSATION |  |  |  |  |  |
Exercise period | 10 years |  |  |  |  |
2020 Omnibus Incentive Plan | Stock Options | Minimum |  |  |  |  |  |
STOCK-BASED COMPENSATION |  |  |  |  |  |
Vesting period | 3 years |  |  |  |  |
2020 Omnibus Incentive Plan | Stock Options | Maximum |  |  |  |  |  |
STOCK-BASED COMPENSATION |  |  |  |  |  |
Vesting period | 5 years |  |  |  |  |
2020 Omnibus Incentive Plan | Restricted Stock Units and Performance Share Units | Minimum |  |  |  |  |  |
STOCK-BASED COMPENSATION |  |  |  |  |  |
Vesting period | 3 years |  |  |  |  |
2020 Omnibus Incentive Plan | Restricted Stock Units and Performance Share Units | Maximum |  |  |  |  |  |
STOCK-BASED COMPENSATION |  |  |  |  |  |
Vesting period | 5 years |  |  |  |  |
2011 Omnibus Incentive Plan |  |  |  |  |  |
STOCK-BASED COMPENSATION |  |  |  |  |  |
Aggregate amount of common stock authorized (in shares) |  |  |  |  |  | 14,169,367

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